This section is from the book "An Experimental History Of The Materia Medica", by William Lewis.
Hippocastanum Pharm. Edinb. aes-cuius Hippocastanurn Linn, Horse-chestnut: The fruit of this tree, which is a trilocular capsule, containing two seeds in each cell, has been given as a food to sheep; and steeped in water, so as to extract its bitterness, is said to fatten poultry. It falls spontaneously into a saponaceous gluten, which has been used instead of soap for warning linen. No writer mentions its medical application; but the Edinburgh college have admitted it on the recommendation of Dr. Gardiner, who says, that three or four grains of the powder snuffed up the nostrils in the evening, operates next morning as an excellent sternutatory, and thereby proves very beneficial in obstinate inflammations of the eyes.
The bark of the horse-chestnut has been proposed in Italy, according to Haller, as a subslitute to Peruvian bark in the cure of in-termittents; and the experiment has proved successful (a).
(a) Stirp. Hefoet. I. 442.